Lime Leaves
To experience the wonderful aroma, sliver the leaves with a knife or scissors and you'll begin to understand just how wonderful this plant is.
Kaffir lime leaf adds an unmistakable, refereshing taste that is essential in many Thai soups and curries.  The combination of lemongrass and lime leaf is a fantastic blast of flavor.  The leaves have a strong fragrance and flavor that can not really be substituted.